mongoose - how to validate specific fields only? - mongodb

Question

I have following mongoose model and routing file.
user.js
var mongoose = require('mongoose'),
Schema = mongoose.Schema,
ObjectId = Schema.ObjectId,
var userSchema = new Schema({
nick_name: {
type: String,
unique: true
},
email: {
type: String,
unique: true
},
first_name: String,
last_name: String,
birth_date: {
type: Date
},
password: {
type: String,
select: true
},
user_type: {
type: Number,
},
is_active: {
type: Number,
default: -1
}
}, { collection: 'user' });
/*
*Validations
*/
userSchema.path('nick_name').required(true, 'nick name is required!');
userSchema.path('email').required(true, 'email is required!');
userSchema.path('password').required(true, 'password is required!');
userSchema.path('user_type').required(true, 'user type is required!');
userSchema.path('is_active').required(true, 'is active is required!');
userSchema.path('is_close').required(true, 'is close is required!');
userSchema.path('first_name').required(true, 'first name is required!');
userSchema.path('last_name').required(true, 'last name is required!');
userSchema.path('birth_date').required(true, 'birth date is required!');
var User = module.exports = mongoose.model("User", userSchema);
router.js
var express = require('express');
var router = express.Router();
var User = require('../models/user');
router
.route('/api/user/register')
.post(
function(req, res, next) {
var user_ = new User(req.body);
/*
*here all validations are required
*/
user_.validate(function(err) {
if (err) {
res.json({ "status": 0, "error": err });
} else {
user_.save(function(err) {
if (err) {
res.json({ "status": 0, "error": { "other": "Oops! something went wrong, please try again later." } });
} else {
res.json({ error: 1, message: 'User registered' });
}
});
}
}
});
}
});
In above routing file I can validate all fields by using validate() method but, I have need validation as following conditions
->When user register, following fields are required
nick_name
email
password
user_type
is_active
->When user edit his profile (after register), all fields are required.
Can anybody help me to solve this issue ?

Answer 1

I just found myself in this situation, want to update a comment model and want a specific field validation for field 'content'.
Im thinking about a hack, pull off that full comment document from the database, then create a new schema object with the same properties from the comment document that i just pulled off from the database and validate this document model copy as if i were to create a new document, but i wont, i wont use the save() method. If there is an error with the 'content' field, which is the only one i care, i would know after validation, if there is no errors then i forget about that new object schema copy that i created by pulling off the comment document from the database, ill forget about it since i already know my 'content' field is valid since no errors where shown, so ill proceed with my flow.
Perhaps instead of pulling off that document from the database i can just create a new object with some fake but valid fields... Then pass the real value i want to test which in my case is 'content', i wouldnt fake that value since i already have it.
NOTE: my comment model has property 'createdAt' so i would replace that for the current date, cause i could have errors at validation saying new comment must be from current date and no from past dates, but since i wont be saving that new date to the database i can add the current date, recall that i will forget about that new object, i wont save it to the database, all i care is the 'content' field validation and see if there is any errors.